Sign me tf up

A young man in a white and green jersey with the number 2 stands in a dark room, then the scene cuts to him in a light blue jersey with the number 1, jumping with arms outstretched. The sequence continues with him in a light blue vest with the number 13, first facing forward, then turning to walk away, followed by a final shot of him in a white jacket over a light green shirt, smiling as he speaks to another person.